Windmill.



0. M. COX.

WINDMILL.

APPLICATION FILED AuG.a. 1914. RENEWED DEC. 18.1911.

1 ,273,582. v atented July 1918.

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0. M. COX.

. WINDMILL.

APPLICATION FILED AUG.3. 1914. RENEwED DEC. 18.1911.

1 ,273,582. Patented July 23, 1918.

2 SHEETS-SHEET 2.

IN VEN TOR.

andas:

Ail I'ORNEY.

OSCAR LVL COX, 0F LOCKNEY, TEXAS.`

WINDMILL.

Specication of Letters Patent.

Patented July 23, 1918.

Application filed August 3, 1914, Serial No. 854,607. Renewed December18, 1917. Serial No. 207,796.

To all whom t may concern.'

` Be it known that I, Oscar. M. Cox, a citizen of the United States,residing at Lockney, in the county of Floyd and State of Texas, haveinvented certain new and useful Improvements in Windmills, of which thefollowing is a specification.

My invention relates to a new and useful windmill, and its object isprimarily to provide a windmill designed to yield an unusual efficiency,and constructed in such a manner that it may be readily builtin thatwill be strong, durable, eilicient and simple and comparativelyinexpensive to produce, alsoone in which the several parts `will not belikely to get out of working order.

With the above and other objects in View, the invention has relation tocertain novel features of construction and operation, an example ofwhich isdescribed in the following specification and illustrated in theaccompanying drawings, wherein:

Figure 1 is a view showing my improved windmill in side elevation.

Y l, Fig. 2 is a plan view of the same, the direction of the wind beingindicated by ar- Fig.J Bis a horizontal sectional view taken 'upon theline a-a of Fig. 1.

jFig. l isa detail elevational view of the ripper portion of mywindmill.

Fig. `5 1s an axial sect1onal View of the same, the section being takenupon the line drawings, whereiny like reference'characters designatesimilar parts in all the figures,

,the numeral 1y denotes a block of concrete constituting a foundationfor my windmill. In this foundation, there is embedded a thrust bearing2, through which is passed the lower extremity of a vertical shaft 3,projecting` slightly below the member 2 and rigidly connected with saidmember in any desired manner. The rigid shaft 3 is` engaged at its upperportion by a' set collar 4 from `which a number -of short radial arms 5project equidistantly. From each of said arms a guy wire 6 is extended,which wires in conjunction serve to maintain the shaft 3 in its propervertical position. Upon the rigid shaft 3 a revoluble shaft 7 ismounted, and carries fast upon its lower end a pulley 8 from which powermay be transmitted in the usual manner to a pump, electric generator orany other machine. The pulley 8 has formed upon its under side a.thrustbearing member 9 which is paired with the rigid thrust bearingmember 2, balls being interposed between the two thrust bearings todecrease friction during operation ofi my windmill. J ust above thepulley 8 a hub 10 is mounted fast upon the sleeve 7, and a similar hubis mounted upon the upper portion of said sleeve. To each hub 10, thereis secured a plurality of equidistant radial arms 1l, the upper andlower arms 11 being paired.l The extremities of each set of arms ll areconnected byl brace Awires 12 (see 'Figs 2 and 3), thus giving increasedstrength and resiliency to the spider formed by each hub 10 and thecorrelated projecting arms.

Between each pair formed by an `upper and a lower radial arm 1l, thereare extended three equidistant vertical pivot rods 13, upon each ofwhich rods, there is mounted a vane comprised of upper and lowerhorizontal end pieces 14 and vertical slats l5 rigidly extending betweenthe parts 1.4L. The vanos are each similarly pivoted adjacent to one oftheir lateral edges, as is clearly indicated in Fig. 3, and their otherlateral edges have pivotal connected at intermediate points with aswinging bar 16, whereby each set of three adjacent vanes are maintainedparallel in any position of rotation about their pivot rods. On ahorizontal level with the bars 16 a plurality of arms 17 proj ectrigidly from the shaft 7 the arms 17 being equal in number to each setof arms 11. Upon the outer end of each arm 17 there is revolubly mounteda small pulley 18, upon which is carried -a 'cord 19, passing from saidpulley in one direction toward an adjacent bar 16 to which it iscentrally connected through a coiled 'spring' 20.' In'its otherdirection the cord extends from the j correlated pulley 18 along thecorrelated arm, 17` to thei-nnenend of said arm,and there.

""a'fterp'assing beneath a "small pulley 21 is `secured to a. lring 22.encircling -rthe vsleeve 7 just above the hub 23 to which the innerrends of the arms 17 4aresecured.' *The ring 22 Vis formed with a ,pairoflfdiametricallyVv *oppositeY upwardly 'projecting lugs W 24, to

each of which is attachedfthelower end of a cordi25. The two cords25'respectively 'i are carried over-small pulleys 26 VVmounted -linbra'ckets527projecting atfdiametrically op-IV i positejp'oints fromafxcap 28 fast upon the Vupper end of thesleeve 7 Fromffthe' pul-V'Hleys 26,'1the cords'25` are respectively 'exftende'd to oppositepoints`upo1rthe face of a Y Adrum 29, andj aresecured to said drum at said.points',f the drun'if29be1ng loosely` mounted upon the shaft 3fabovetl'ie cap 28, a circle of balls beingf interposedf jbetween said'drum slightly'towardltheA axis of :the ,windmill f fromrtheirllowerto-their upper ends. V.The

' upper endsof the' `levers 30 are pivotallyengaged' witha'rms 32extending outwardlyv at an upward inclination from a collar 33, slid`"-able'uponfthe shaft 3 just above the collar 4,.-

vfand frestricted from, rotation by vitsvconnjecvtion with/#the collar 4through theparts 30 and 32. .VThefcollar 33 has its upper fend portiongrooved` to'freceive Ia loose fitting Acollar n v35, irom'idiametrically opposite points of ahorizontal*position. The portions 37of said which 'farms 36" areV extended upwardly, their ivupper-extrem-ities beingrespectively pivot;

ally engaged-with spaced portions 37V of aV bell-crank arm 38, normallyoccupying a arms extend at eaclr side of a collar 39 loosely! mountedonftheupperend of the i sha-ft'3,and from said collar a horizontal*- 1farm'40projects rigidlyinanf'oppsite direc- "fftion from the arrn3'8,aver-tical vane formed- 'withhorizonta'l slats 4'1' being mounted uponleth'e'outerfendfopf'the arm' 40 (see Fig.y 1).

VThe*bellscrank'arm 38 is correlated with an 'w upwardlyprojecting arm42,fthe bell-crank .farms 38'and 42 as f'indicated at this piv- Totalp'ointb'eing'upon the -arm `40f adjacent to' thecollar 39"(see' V4); Thearm 42 is Y surmounted by-'fa' normally vertical vane 1 1 44, theplaneof which' istransversiwith that Y' of` thev vane 41. .Up'onthe outer endof the?f jf`a'rm38fa1weight 45 is 'ad-ju'stablyiin'ounted. f' .l

The slats 15 of they-ane have theirpivoted Fig. 2 and Fig. 3.

vsupports 13 so arranged Vthatwhen the slats are inclosed and the lvaneinfoperaitve position, the slats overlap as clearly shown in The variousfeatures of the construction of -my invention having been above fullydescribed, an explanation will nowbe given as to theoperation of thedevice.vv Considering the direction of the wind to be that" indicated bythe 'rectilinear 'arrows in Fig.2,ithe direc- -tion of rotation of therevoluble parts will be that indicatedfby'ftheflarcuate arrow=- in vthesame figure ;f namely, 1counterclockwise.

and hence-subject the windwheel to aimfaximum tendency to rotation.'flVh'en the varies invv their rotation are movingfagainst thewindeither directly or approximately the pressure of the wind will causethemto assume' position edgewise to the wind so .that their resistancein-'traversing thisportion oftheir path of rotation is'negligible. )The'vane 41 f serves to maintain the bellecrank comprising the arms 38 and42const'antly ina position 1 in which the vane 44 'istransverse withVthe Wind. lVhen the force of the wind' lbecomes excessive, saidbell'crank maybe displaced to a certain extent above `the pivot 43, Ztheweighted arm` 38 beingf elevated. ``.The up? ward movement off-the armf38 isv communif cated through the arms 361/50the'fcollar-i33,

andthe upward sliding displacement of said collar acts through the arms32 to displace the upper' extremities oiy the" levers? 30l out- Y wardlytherebyy applying thebrakeV shoes 31 `tion of the said"` drum-beingtlius'- retarded,

thercords` 245 will ten'dj tofwindffuponlsaid drum at their f upperfendsf, and' vthe collar' 22 of rotation the windmill, s wingingal=lf""ofr *the wind i'rvhee'l vanes -tolthe positions lindicated indash "li-nesj in fFig. '2l ffWhenlilthe f lvanes arer rigidlyVmaintained in: the specified positions; t'heyiE oi'erfj only slight"f'resistance v v -tothe wind and this resista-neeffbeingfiequally:being'fpivoted at'the juncture'k of the. two? distributed at each7lrside off 'the axis o'ffthe windmill, no rotationn will result.'l thevanes.- occu'py'lthef:positions illustrated in dash =lines in Fig. Y 2,thesprings20-willallow all suchmodifications and changes as properlycome within the scope of the following claims.

What I claim is:

l. A Windmill comprising a revoluble shaft, a pair of spidersrespectively fast upon the end portions of said shaft, their arms beingalined parallel to the shafts, a plurality of vanes interposed betweeneach pair of alined arms, a bar establishing swinging connection betweencorresponding edges of each set of vanes, a spider intermcdiatelymounted upon the shaft having its arms extending between the set ofvanos, pulleys mounted on the extremities of the arms of the last namedspider, cords each having connection with one of said swinging bars andeach extending' toward the shafll along one arm of the last named spiderafter being carried over the pulley on the outer end thereof, a pulleymounted upon the i11- ner end of each of said spider arms, the cordcorrelated with said arm being passed through a quarter turn on saidpulley, a collar concentric with the shaft, to which each of said cordsare secured, a counterbalanced normally upstanding vane, and meansactuated by a displacement of said vane from its normal positioncommunicating a displacement to said collar whereby said cords areplaced inl tension shifting the vanes each to a substantially tangentialposition.

2. A windmill comprising a vertical shaft, a pair of vertically spacedspiders revoluble about said shaft, a plurality of vertical vanesrevoluble about said shaft, extending between the two spiders, an armloosely mounted on the upper end of said shaft projecting therefrom, avertical vane carried by the outer end of said arm, a bell-crank pivotedat its apex upon the inner end of said arm, comprising an upwardly and ahorizontally projecting arm, the latter being weighted, a Vanesurmounting the upwardly projecting arm, a collar vertically adjustableupon the shaft below the bell-crank, a swinging connection between saidcollar and the horizon tally projecting arm of said bell-crank, a brakedrum loosely mounted upon the shaft below said collar, brake shoesnormally spaced from said collar, and a mechanism actuated by thevertical displacement of the sliding collar for applying' the brakeshoes to the brake drum, cords adapted to be wound upon the brake drumand adapted to actuate the vanes of a wind wheel to a position whichthey rigidly maintain.

In testimony whereof .l have signed my name to this specification in thepresence of two subscribing witnesses.

OSCAR M. COX.

Witnesses:

CHARLES CLnMnN'rs, A. E. SULLIVAN.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

